4 * Copyright (c) 2003 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 #include "pixel_ops.h"
30 #include "qemu-timer.h"
34 //#define DEBUG_VGA_MEM
35 //#define DEBUG_VGA_REG
37 //#define DEBUG_BOCHS_VBE
39 /* force some bits to zero */
40 const uint8_t sr_mask[8] = {
51 const uint8_t gr_mask[16] = {
70 #define cbswap_32(__x) \
72 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
73 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
74 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
75 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
77 #ifdef HOST_WORDS_BIGENDIAN
78 #define PAT(x) cbswap_32(x)
83 #ifdef HOST_WORDS_BIGENDIAN
89 #ifdef HOST_WORDS_BIGENDIAN
90 #define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
92 #define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
95 static const uint32_t mask16[16] = {
116 #ifdef HOST_WORDS_BIGENDIAN
119 #define PAT(x) cbswap_32(x)
122 static const uint32_t dmask16[16] = {
141 static const uint32_t dmask4[4] = {
148 static uint32_t expand4[256];
149 static uint16_t expand2[256];
150 static uint8_t expand4to8[16];
152 static void vga_screen_dump(void *opaque, const char *filename);
153 static char *screen_dump_filename;
154 static DisplayChangeListener *screen_dump_dcl;
156 static void vga_dumb_update_retrace_info(VGACommonState *s)
161 static void vga_precise_update_retrace_info(VGACommonState *s)
164 int hretr_start_char;
165 int hretr_skew_chars;
169 int vretr_start_line;
172 int div2, sldiv2, dots;
175 const int clk_hz[] = {25175000, 28322000, 25175000, 25175000};
176 int64_t chars_per_sec;
177 struct vga_precise_retrace *r = &s->retrace_info.precise;
179 htotal_chars = s->cr[0x00] + 5;
180 hretr_start_char = s->cr[0x04];
181 hretr_skew_chars = (s->cr[0x05] >> 5) & 3;
182 hretr_end_char = s->cr[0x05] & 0x1f;
184 vtotal_lines = (s->cr[0x06]
185 | (((s->cr[0x07] & 1) | ((s->cr[0x07] >> 4) & 2)) << 8)) + 2
187 vretr_start_line = s->cr[0x10]
188 | ((((s->cr[0x07] >> 2) & 1) | ((s->cr[0x07] >> 6) & 2)) << 8)
190 vretr_end_line = s->cr[0x11] & 0xf;
193 div2 = (s->cr[0x17] >> 2) & 1;
194 sldiv2 = (s->cr[0x17] >> 3) & 1;
196 clocking_mode = (s->sr[0x01] >> 3) & 1;
197 clock_sel = (s->msr >> 2) & 3;
198 dots = (s->msr & 1) ? 8 : 9;
200 chars_per_sec = clk_hz[clock_sel] / dots;
202 htotal_chars <<= clocking_mode;
204 r->total_chars = vtotal_lines * htotal_chars;
206 r->ticks_per_char = get_ticks_per_sec() / (r->total_chars * r->freq);
208 r->ticks_per_char = get_ticks_per_sec() / chars_per_sec;
211 r->vstart = vretr_start_line;
212 r->vend = r->vstart + vretr_end_line + 1;
214 r->hstart = hretr_start_char + hretr_skew_chars;
215 r->hend = r->hstart + hretr_end_char + 1;
216 r->htotal = htotal_chars;
228 "div2 = %d sldiv2 = %d\n"
229 "clocking_mode = %d\n"
230 "clock_sel = %d %d\n"
232 "ticks/char = %lld\n"
234 (double) get_ticks_per_sec() / (r->ticks_per_char * r->total_chars),
252 static uint8_t vga_precise_retrace(VGACommonState *s)
254 struct vga_precise_retrace *r = &s->retrace_info.precise;
255 uint8_t val = s->st01 & ~(ST01_V_RETRACE | ST01_DISP_ENABLE);
257 if (r->total_chars) {
258 int cur_line, cur_line_char, cur_char;
261 cur_tick = qemu_get_clock(vm_clock);
263 cur_char = (cur_tick / r->ticks_per_char) % r->total_chars;
264 cur_line = cur_char / r->htotal;
266 if (cur_line >= r->vstart && cur_line <= r->vend) {
267 val |= ST01_V_RETRACE | ST01_DISP_ENABLE;
269 cur_line_char = cur_char % r->htotal;
270 if (cur_line_char >= r->hstart && cur_line_char <= r->hend) {
271 val |= ST01_DISP_ENABLE;
277 return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
281 static uint8_t vga_dumb_retrace(VGACommonState *s)
283 return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
286 int vga_ioport_invalid(VGACommonState *s, uint32_t addr)
288 if (s->msr & MSR_COLOR_EMULATION) {
290 return (addr >= 0x3b0 && addr <= 0x3bf);
293 return (addr >= 0x3d0 && addr <= 0x3df);
297 uint32_t vga_ioport_read(void *opaque, uint32_t addr)
299 VGACommonState *s = opaque;
302 if (vga_ioport_invalid(s, addr)) {
307 if (s->ar_flip_flop == 0) {
314 index = s->ar_index & 0x1f;
327 val = s->sr[s->sr_index];
329 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
336 val = s->dac_write_index;
339 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
340 if (++s->dac_sub_index == 3) {
341 s->dac_sub_index = 0;
355 val = s->gr[s->gr_index];
357 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
366 val = s->cr[s->cr_index];
368 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
373 /* just toggle to fool polling */
374 val = s->st01 = s->retrace(s);
382 #if defined(DEBUG_VGA)
383 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
388 void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
390 VGACommonState *s = opaque;
393 /* check port range access depending on color/monochrome mode */
394 if (vga_ioport_invalid(s, addr)) {
398 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
403 if (s->ar_flip_flop == 0) {
407 index = s->ar_index & 0x1f;
410 s->ar[index] = val & 0x3f;
413 s->ar[index] = val & ~0x10;
419 s->ar[index] = val & ~0xc0;
422 s->ar[index] = val & ~0xf0;
425 s->ar[index] = val & ~0xf0;
431 s->ar_flip_flop ^= 1;
434 s->msr = val & ~0x10;
435 s->update_retrace_info(s);
438 s->sr_index = val & 7;
442 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
444 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
445 if (s->sr_index == 1) s->update_retrace_info(s);
448 s->dac_read_index = val;
449 s->dac_sub_index = 0;
453 s->dac_write_index = val;
454 s->dac_sub_index = 0;
458 s->dac_cache[s->dac_sub_index] = val;
459 if (++s->dac_sub_index == 3) {
460 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
461 s->dac_sub_index = 0;
462 s->dac_write_index++;
466 s->gr_index = val & 0x0f;
470 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
472 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
481 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
483 /* handle CR0-7 protection */
484 if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
485 /* can always write bit 4 of CR7 */
486 if (s->cr_index == 7)
487 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
490 s->cr[s->cr_index] = val;
492 switch(s->cr_index) {
500 s->update_retrace_info(s);
511 #ifdef CONFIG_BOCHS_VBE
512 static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
514 VGACommonState *s = opaque;
520 static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
522 VGACommonState *s = opaque;
525 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
526 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
527 switch(s->vbe_index) {
528 /* XXX: do not hardcode ? */
529 case VBE_DISPI_INDEX_XRES:
530 val = VBE_DISPI_MAX_XRES;
532 case VBE_DISPI_INDEX_YRES:
533 val = VBE_DISPI_MAX_YRES;
535 case VBE_DISPI_INDEX_BPP:
536 val = VBE_DISPI_MAX_BPP;
539 val = s->vbe_regs[s->vbe_index];
543 val = s->vbe_regs[s->vbe_index];
548 #ifdef DEBUG_BOCHS_VBE
549 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
554 static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
556 VGACommonState *s = opaque;
560 static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
562 VGACommonState *s = opaque;
564 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
565 #ifdef DEBUG_BOCHS_VBE
566 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
568 switch(s->vbe_index) {
569 case VBE_DISPI_INDEX_ID:
570 if (val == VBE_DISPI_ID0 ||
571 val == VBE_DISPI_ID1 ||
572 val == VBE_DISPI_ID2 ||
573 val == VBE_DISPI_ID3 ||
574 val == VBE_DISPI_ID4) {
575 s->vbe_regs[s->vbe_index] = val;
578 case VBE_DISPI_INDEX_XRES:
579 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
580 s->vbe_regs[s->vbe_index] = val;
583 case VBE_DISPI_INDEX_YRES:
584 if (val <= VBE_DISPI_MAX_YRES) {
585 s->vbe_regs[s->vbe_index] = val;
588 case VBE_DISPI_INDEX_BPP:
591 if (val == 4 || val == 8 || val == 15 ||
592 val == 16 || val == 24 || val == 32) {
593 s->vbe_regs[s->vbe_index] = val;
596 case VBE_DISPI_INDEX_BANK:
597 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
598 val &= (s->vbe_bank_mask >> 2);
600 val &= s->vbe_bank_mask;
602 s->vbe_regs[s->vbe_index] = val;
603 s->bank_offset = (val << 16);
605 case VBE_DISPI_INDEX_ENABLE:
606 if ((val & VBE_DISPI_ENABLED) &&
607 !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
608 int h, shift_control;
610 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
611 s->vbe_regs[VBE_DISPI_INDEX_XRES];
612 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
613 s->vbe_regs[VBE_DISPI_INDEX_YRES];
614 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
615 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
617 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
618 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
620 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
621 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
622 s->vbe_start_addr = 0;
624 /* clear the screen (should be done in BIOS) */
625 if (!(val & VBE_DISPI_NOCLEARMEM)) {
626 memset(s->vram_ptr, 0,
627 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
630 /* we initialize the VGA graphic mode (should be done
632 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
633 s->cr[0x17] |= 3; /* no CGA modes */
634 s->cr[0x13] = s->vbe_line_offset >> 3;
636 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
637 /* height (only meaningful if < 1024) */
638 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
640 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
641 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
642 /* line compare to 1023 */
647 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
649 s->sr[0x01] &= ~8; /* no double line */
652 s->sr[4] |= 0x08; /* set chain 4 mode */
653 s->sr[2] |= 0x0f; /* activate all planes */
655 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
656 s->cr[0x09] &= ~0x9f; /* no double scan */
658 /* XXX: the bios should do that */
661 s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0;
662 s->vbe_regs[s->vbe_index] = val;
664 case VBE_DISPI_INDEX_VIRT_WIDTH:
666 int w, h, line_offset;
668 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
671 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
672 line_offset = w >> 1;
674 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
675 h = s->vram_size / line_offset;
676 /* XXX: support weird bochs semantics ? */
677 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
679 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
680 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
681 s->vbe_line_offset = line_offset;
684 case VBE_DISPI_INDEX_X_OFFSET:
685 case VBE_DISPI_INDEX_Y_OFFSET:
688 s->vbe_regs[s->vbe_index] = val;
689 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
690 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
691 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
692 s->vbe_start_addr += x >> 1;
694 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
695 s->vbe_start_addr >>= 2;
705 /* called for accesses between 0xa0000 and 0xc0000 */
706 uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
708 VGACommonState *s = opaque;
709 int memory_map_mode, plane;
712 /* convert to VGA memory offset */
713 memory_map_mode = (s->gr[6] >> 2) & 3;
715 switch(memory_map_mode) {
721 addr += s->bank_offset;
736 if (s->sr[4] & 0x08) {
737 /* chain 4 mode : simplest access */
738 ret = s->vram_ptr[addr];
739 } else if (s->gr[5] & 0x10) {
740 /* odd/even mode (aka text mode mapping) */
741 plane = (s->gr[4] & 2) | (addr & 1);
742 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
744 /* standard VGA latched access */
745 s->latch = ((uint32_t *)s->vram_ptr)[addr];
747 if (!(s->gr[5] & 0x08)) {
750 ret = GET_PLANE(s->latch, plane);
753 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
762 static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
765 #ifdef TARGET_WORDS_BIGENDIAN
766 v = vga_mem_readb(opaque, addr) << 8;
767 v |= vga_mem_readb(opaque, addr + 1);
769 v = vga_mem_readb(opaque, addr);
770 v |= vga_mem_readb(opaque, addr + 1) << 8;
775 static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
778 #ifdef TARGET_WORDS_BIGENDIAN
779 v = vga_mem_readb(opaque, addr) << 24;
780 v |= vga_mem_readb(opaque, addr + 1) << 16;
781 v |= vga_mem_readb(opaque, addr + 2) << 8;
782 v |= vga_mem_readb(opaque, addr + 3);
784 v = vga_mem_readb(opaque, addr);
785 v |= vga_mem_readb(opaque, addr + 1) << 8;
786 v |= vga_mem_readb(opaque, addr + 2) << 16;
787 v |= vga_mem_readb(opaque, addr + 3) << 24;
792 /* called for accesses between 0xa0000 and 0xc0000 */
793 void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
795 VGACommonState *s = opaque;
796 int memory_map_mode, plane, write_mode, b, func_select, mask;
797 uint32_t write_mask, bit_mask, set_mask;
800 printf("vga: [0x" TARGET_FMT_plx "] = 0x%02x\n", addr, val);
802 /* convert to VGA memory offset */
803 memory_map_mode = (s->gr[6] >> 2) & 3;
805 switch(memory_map_mode) {
811 addr += s->bank_offset;
826 if (s->sr[4] & 0x08) {
827 /* chain 4 mode : simplest access */
830 if (s->sr[2] & mask) {
831 s->vram_ptr[addr] = val;
833 printf("vga: chain4: [0x" TARGET_FMT_plx "]\n", addr);
835 s->plane_updated |= mask; /* only used to detect font change */
836 cpu_physical_memory_set_dirty(s->vram_offset + addr);
838 } else if (s->gr[5] & 0x10) {
839 /* odd/even mode (aka text mode mapping) */
840 plane = (s->gr[4] & 2) | (addr & 1);
842 if (s->sr[2] & mask) {
843 addr = ((addr & ~1) << 1) | plane;
844 s->vram_ptr[addr] = val;
846 printf("vga: odd/even: [0x" TARGET_FMT_plx "]\n", addr);
848 s->plane_updated |= mask; /* only used to detect font change */
849 cpu_physical_memory_set_dirty(s->vram_offset + addr);
852 /* standard VGA latched access */
853 write_mode = s->gr[5] & 3;
859 val = ((val >> b) | (val << (8 - b))) & 0xff;
863 /* apply set/reset mask */
864 set_mask = mask16[s->gr[1]];
865 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
872 val = mask16[val & 0x0f];
878 val = (val >> b) | (val << (8 - b));
880 bit_mask = s->gr[8] & val;
881 val = mask16[s->gr[0]];
885 /* apply logical operation */
886 func_select = s->gr[3] >> 3;
887 switch(func_select) {
907 bit_mask |= bit_mask << 8;
908 bit_mask |= bit_mask << 16;
909 val = (val & bit_mask) | (s->latch & ~bit_mask);
912 /* mask data according to sr[2] */
914 s->plane_updated |= mask; /* only used to detect font change */
915 write_mask = mask16[mask];
916 ((uint32_t *)s->vram_ptr)[addr] =
917 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
920 printf("vga: latch: [0x" TARGET_FMT_plx "] mask=0x%08x val=0x%08x\n",
921 addr * 4, write_mask, val);
923 cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
927 static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
929 #ifdef TARGET_WORDS_BIGENDIAN
930 vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
931 vga_mem_writeb(opaque, addr + 1, val & 0xff);
933 vga_mem_writeb(opaque, addr, val & 0xff);
934 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
938 static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
940 #ifdef TARGET_WORDS_BIGENDIAN
941 vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
942 vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
943 vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
944 vga_mem_writeb(opaque, addr + 3, val & 0xff);
946 vga_mem_writeb(opaque, addr, val & 0xff);
947 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
948 vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
949 vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
953 typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
954 const uint8_t *font_ptr, int h,
955 uint32_t fgcol, uint32_t bgcol);
956 typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
957 const uint8_t *font_ptr, int h,
958 uint32_t fgcol, uint32_t bgcol, int dup9);
959 typedef void vga_draw_line_func(VGACommonState *s1, uint8_t *d,
960 const uint8_t *s, int width);
963 #include "vga_template.h"
966 #include "vga_template.h"
970 #include "vga_template.h"
973 #include "vga_template.h"
977 #include "vga_template.h"
980 #include "vga_template.h"
984 #include "vga_template.h"
986 static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
989 col = rgb_to_pixel8(r, g, b);
995 static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
998 col = rgb_to_pixel15(r, g, b);
1003 static unsigned int rgb_to_pixel15bgr_dup(unsigned int r, unsigned int g,
1007 col = rgb_to_pixel15bgr(r, g, b);
1012 static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
1015 col = rgb_to_pixel16(r, g, b);
1020 static unsigned int rgb_to_pixel16bgr_dup(unsigned int r, unsigned int g,
1024 col = rgb_to_pixel16bgr(r, g, b);
1029 static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
1032 col = rgb_to_pixel32(r, g, b);
1036 static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b)
1039 col = rgb_to_pixel32bgr(r, g, b);
1043 /* return true if the palette was modified */
1044 static int update_palette16(VGACommonState *s)
1047 uint32_t v, col, *palette;
1050 palette = s->last_palette;
1051 for(i = 0; i < 16; i++) {
1053 if (s->ar[0x10] & 0x80)
1054 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
1056 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
1058 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
1059 c6_to_8(s->palette[v + 1]),
1060 c6_to_8(s->palette[v + 2]));
1061 if (col != palette[i]) {
1069 /* return true if the palette was modified */
1070 static int update_palette256(VGACommonState *s)
1073 uint32_t v, col, *palette;
1076 palette = s->last_palette;
1078 for(i = 0; i < 256; i++) {
1080 col = s->rgb_to_pixel(s->palette[v],
1084 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
1085 c6_to_8(s->palette[v + 1]),
1086 c6_to_8(s->palette[v + 2]));
1088 if (col != palette[i]) {
1097 static void vga_get_offsets(VGACommonState *s,
1098 uint32_t *pline_offset,
1099 uint32_t *pstart_addr,
1100 uint32_t *pline_compare)
1102 uint32_t start_addr, line_offset, line_compare;
1103 #ifdef CONFIG_BOCHS_VBE
1104 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1105 line_offset = s->vbe_line_offset;
1106 start_addr = s->vbe_start_addr;
1107 line_compare = 65535;
1111 /* compute line_offset in bytes */
1112 line_offset = s->cr[0x13];
1115 /* starting address */
1116 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
1119 line_compare = s->cr[0x18] |
1120 ((s->cr[0x07] & 0x10) << 4) |
1121 ((s->cr[0x09] & 0x40) << 3);
1123 *pline_offset = line_offset;
1124 *pstart_addr = start_addr;
1125 *pline_compare = line_compare;
1128 /* update start_addr and line_offset. Return TRUE if modified */
1129 static int update_basic_params(VGACommonState *s)
1132 uint32_t start_addr, line_offset, line_compare;
1136 s->get_offsets(s, &line_offset, &start_addr, &line_compare);
1138 if (line_offset != s->line_offset ||
1139 start_addr != s->start_addr ||
1140 line_compare != s->line_compare) {
1141 s->line_offset = line_offset;
1142 s->start_addr = start_addr;
1143 s->line_compare = line_compare;
1151 static inline int get_depth_index(DisplayState *s)
1153 switch(ds_get_bits_per_pixel(s)) {
1162 if (is_surface_bgr(s->surface))
1169 static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
1179 static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
1181 vga_draw_glyph16_16,
1182 vga_draw_glyph16_16,
1183 vga_draw_glyph16_32,
1184 vga_draw_glyph16_32,
1185 vga_draw_glyph16_16,
1186 vga_draw_glyph16_16,
1189 static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
1199 static const uint8_t cursor_glyph[32 * 4] = {
1200 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1201 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1202 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1203 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1204 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1205 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1206 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1207 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1208 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1209 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1210 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1211 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1212 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1213 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1214 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1215 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1218 static void vga_get_text_resolution(VGACommonState *s, int *pwidth, int *pheight,
1219 int *pcwidth, int *pcheight)
1221 int width, cwidth, height, cheight;
1223 /* total width & height */
1224 cheight = (s->cr[9] & 0x1f) + 1;
1226 if (!(s->sr[1] & 0x01))
1228 if (s->sr[1] & 0x08)
1229 cwidth = 16; /* NOTE: no 18 pixel wide */
1230 width = (s->cr[0x01] + 1);
1231 if (s->cr[0x06] == 100) {
1232 /* ugly hack for CGA 160x100x16 - explain me the logic */
1235 height = s->cr[0x12] |
1236 ((s->cr[0x07] & 0x02) << 7) |
1237 ((s->cr[0x07] & 0x40) << 3);
1238 height = (height + 1) / cheight;
1244 *pcheight = cheight;
1247 typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
1249 static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
1254 rgb_to_pixel32bgr_dup,
1255 rgb_to_pixel15bgr_dup,
1256 rgb_to_pixel16bgr_dup,
1267 static void vga_draw_text(VGACommonState *s, int full_update)
1269 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1270 int cx_min, cx_max, linesize, x_incr, line, line1;
1271 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1272 uint8_t *d1, *d, *src, *dest, *cursor_ptr;
1273 const uint8_t *font_ptr, *font_base[2];
1274 int dup9, line_offset, depth_index;
1276 uint32_t *ch_attr_ptr;
1277 vga_draw_glyph8_func *vga_draw_glyph8;
1278 vga_draw_glyph9_func *vga_draw_glyph9;
1280 /* compute font data address (in plane 2) */
1282 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1283 if (offset != s->font_offsets[0]) {
1284 s->font_offsets[0] = offset;
1287 font_base[0] = s->vram_ptr + offset;
1289 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1290 font_base[1] = s->vram_ptr + offset;
1291 if (offset != s->font_offsets[1]) {
1292 s->font_offsets[1] = offset;
1295 if (s->plane_updated & (1 << 2)) {
1296 /* if the plane 2 was modified since the last display, it
1297 indicates the font may have been modified */
1298 s->plane_updated = 0;
1301 full_update |= update_basic_params(s);
1303 line_offset = s->line_offset;
1305 vga_get_text_resolution(s, &width, &height, &cw, &cheight);
1306 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1307 if ((height * width) > CH_ATTR_SIZE) {
1308 /* better than nothing: exit if transient size is too big */
1312 if (width != s->last_width || height != s->last_height ||
1313 cw != s->last_cw || cheight != s->last_ch || s->last_depth) {
1314 s->last_scr_width = width * cw;
1315 s->last_scr_height = height * cheight;
1316 qemu_console_resize(s->ds, s->last_scr_width, s->last_scr_height);
1318 s->last_width = width;
1319 s->last_height = height;
1320 s->last_ch = cheight;
1325 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1326 full_update |= update_palette16(s);
1327 palette = s->last_palette;
1328 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1330 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1331 if (cursor_offset != s->cursor_offset ||
1332 s->cr[0xa] != s->cursor_start ||
1333 s->cr[0xb] != s->cursor_end) {
1334 /* if the cursor position changed, we update the old and new
1336 if (s->cursor_offset < CH_ATTR_SIZE)
1337 s->last_ch_attr[s->cursor_offset] = -1;
1338 if (cursor_offset < CH_ATTR_SIZE)
1339 s->last_ch_attr[cursor_offset] = -1;
1340 s->cursor_offset = cursor_offset;
1341 s->cursor_start = s->cr[0xa];
1342 s->cursor_end = s->cr[0xb];
1344 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1346 depth_index = get_depth_index(s->ds);
1348 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1350 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1351 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1353 dest = ds_get_data(s->ds);
1354 linesize = ds_get_linesize(s->ds);
1355 ch_attr_ptr = s->last_ch_attr;
1357 offset = s->start_addr * 4;
1358 for(cy = 0; cy < height; cy++) {
1360 src = s->vram_ptr + offset;
1363 for(cx = 0; cx < width; cx++) {
1364 ch_attr = *(uint16_t *)src;
1365 if (full_update || ch_attr != *ch_attr_ptr) {
1370 *ch_attr_ptr = ch_attr;
1371 #ifdef HOST_WORDS_BIGENDIAN
1373 cattr = ch_attr & 0xff;
1375 ch = ch_attr & 0xff;
1376 cattr = ch_attr >> 8;
1378 font_ptr = font_base[(cattr >> 3) & 1];
1379 font_ptr += 32 * 4 * ch;
1380 bgcol = palette[cattr >> 4];
1381 fgcol = palette[cattr & 0x0f];
1383 vga_draw_glyph8(d1, linesize,
1384 font_ptr, cheight, fgcol, bgcol);
1387 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1389 vga_draw_glyph9(d1, linesize,
1390 font_ptr, cheight, fgcol, bgcol, dup9);
1392 if (src == cursor_ptr &&
1393 !(s->cr[0x0a] & 0x20)) {
1394 int line_start, line_last, h;
1395 /* draw the cursor */
1396 line_start = s->cr[0x0a] & 0x1f;
1397 line_last = s->cr[0x0b] & 0x1f;
1398 /* XXX: check that */
1399 if (line_last > cheight - 1)
1400 line_last = cheight - 1;
1401 if (line_last >= line_start && line_start < cheight) {
1402 h = line_last - line_start + 1;
1403 d = d1 + linesize * line_start;
1405 vga_draw_glyph8(d, linesize,
1406 cursor_glyph, h, fgcol, bgcol);
1408 vga_draw_glyph9(d, linesize,
1409 cursor_glyph, h, fgcol, bgcol, 1);
1419 dpy_update(s->ds, cx_min * cw, cy * cheight,
1420 (cx_max - cx_min + 1) * cw, cheight);
1422 dest += linesize * cheight;
1423 line1 = line + cheight;
1424 offset += line_offset;
1425 if (line < s->line_compare && line1 >= s->line_compare) {
1446 static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
1456 vga_draw_line2d2_16,
1457 vga_draw_line2d2_16,
1458 vga_draw_line2d2_32,
1459 vga_draw_line2d2_32,
1460 vga_draw_line2d2_16,
1461 vga_draw_line2d2_16,
1472 vga_draw_line4d2_16,
1473 vga_draw_line4d2_16,
1474 vga_draw_line4d2_32,
1475 vga_draw_line4d2_32,
1476 vga_draw_line4d2_16,
1477 vga_draw_line4d2_16,
1480 vga_draw_line8d2_16,
1481 vga_draw_line8d2_16,
1482 vga_draw_line8d2_32,
1483 vga_draw_line8d2_32,
1484 vga_draw_line8d2_16,
1485 vga_draw_line8d2_16,
1499 vga_draw_line15_32bgr,
1500 vga_draw_line15_15bgr,
1501 vga_draw_line15_16bgr,
1507 vga_draw_line16_32bgr,
1508 vga_draw_line16_15bgr,
1509 vga_draw_line16_16bgr,
1515 vga_draw_line24_32bgr,
1516 vga_draw_line24_15bgr,
1517 vga_draw_line24_16bgr,
1523 vga_draw_line32_32bgr,
1524 vga_draw_line32_15bgr,
1525 vga_draw_line32_16bgr,
1528 static int vga_get_bpp(VGACommonState *s)
1531 #ifdef CONFIG_BOCHS_VBE
1532 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1533 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1542 static void vga_get_resolution(VGACommonState *s, int *pwidth, int *pheight)
1546 #ifdef CONFIG_BOCHS_VBE
1547 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1548 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1549 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1553 width = (s->cr[0x01] + 1) * 8;
1554 height = s->cr[0x12] |
1555 ((s->cr[0x07] & 0x02) << 7) |
1556 ((s->cr[0x07] & 0x40) << 3);
1557 height = (height + 1);
1563 void vga_invalidate_scanlines(VGACommonState *s, int y1, int y2)
1566 if (y1 >= VGA_MAX_HEIGHT)
1568 if (y2 >= VGA_MAX_HEIGHT)
1569 y2 = VGA_MAX_HEIGHT;
1570 for(y = y1; y < y2; y++) {
1571 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1575 static void vga_sync_dirty_bitmap(VGACommonState *s)
1578 cpu_physical_sync_dirty_bitmap(s->map_addr, s->map_end);
1580 if (s->lfb_vram_mapped) {
1581 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa0000, 0xa8000);
1582 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa8000, 0xb0000);
1585 #ifdef CONFIG_BOCHS_VBE
1586 if (s->vbe_mapped) {
1587 cpu_physical_sync_dirty_bitmap(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
1588 VBE_DISPI_LFB_PHYSICAL_ADDRESS + s->vram_size);
1594 void vga_dirty_log_start(VGACommonState *s)
1596 if (kvm_enabled() && s->map_addr)
1597 kvm_log_start(s->map_addr, s->map_end - s->map_addr);
1599 if (kvm_enabled() && s->lfb_vram_mapped) {
1600 kvm_log_start(isa_mem_base + 0xa0000, 0x8000);
1601 kvm_log_start(isa_mem_base + 0xa8000, 0x8000);
1604 #ifdef CONFIG_BOCHS_VBE
1605 if (kvm_enabled() && s->vbe_mapped) {
1606 kvm_log_start(VBE_DISPI_LFB_PHYSICAL_ADDRESS, s->vram_size);
1611 void vga_dirty_log_stop(VGACommonState *s)
1613 if (kvm_enabled() && s->map_addr)
1614 kvm_log_stop(s->map_addr, s->map_end - s->map_addr);
1616 if (kvm_enabled() && s->lfb_vram_mapped) {
1617 kvm_log_stop(isa_mem_base + 0xa0000, 0x80000);
1618 kvm_log_stop(isa_mem_base + 0xa8000, 0x80000);
1621 #ifdef CONFIG_BOCHS_VBE
1622 if (kvm_enabled() && s->vbe_mapped) {
1623 kvm_log_stop(VBE_DISPI_LFB_PHYSICAL_ADDRESS, s->vram_size);
1628 void vga_dirty_log_restart(VGACommonState *s)
1630 vga_dirty_log_stop(s);
1631 vga_dirty_log_start(s);
1637 static void vga_draw_graphic(VGACommonState *s, int full_update)
1639 int y1, y, update, linesize, y_start, double_scan, mask, depth;
1640 int width, height, shift_control, line_offset, bwidth, bits;
1641 ram_addr_t page0, page1, page_min, page_max;
1642 int disp_width, multi_scan, multi_run;
1644 uint32_t v, addr1, addr;
1645 vga_draw_line_func *vga_draw_line;
1647 full_update |= update_basic_params(s);
1650 vga_sync_dirty_bitmap(s);
1652 s->get_resolution(s, &width, &height);
1655 shift_control = (s->gr[0x05] >> 5) & 3;
1656 double_scan = (s->cr[0x09] >> 7);
1657 if (shift_control != 1) {
1658 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1660 /* in CGA modes, multi_scan is ignored */
1661 /* XXX: is it correct ? */
1662 multi_scan = double_scan;
1664 multi_run = multi_scan;
1665 if (shift_control != s->shift_control ||
1666 double_scan != s->double_scan) {
1668 s->shift_control = shift_control;
1669 s->double_scan = double_scan;
1672 if (shift_control == 0) {
1673 if (s->sr[0x01] & 8) {
1676 } else if (shift_control == 1) {
1677 if (s->sr[0x01] & 8) {
1682 depth = s->get_bpp(s);
1683 if (s->line_offset != s->last_line_offset ||
1684 disp_width != s->last_width ||
1685 height != s->last_height ||
1686 s->last_depth != depth) {
1687 #if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
1688 if (depth == 16 || depth == 32) {
1692 qemu_free_displaysurface(s->ds);
1693 s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth,
1695 s->vram_ptr + (s->start_addr * 4));
1696 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
1697 s->ds->surface->pf = qemu_different_endianness_pixelformat(depth);
1701 qemu_console_resize(s->ds, disp_width, height);
1703 s->last_scr_width = disp_width;
1704 s->last_scr_height = height;
1705 s->last_width = disp_width;
1706 s->last_height = height;
1707 s->last_line_offset = s->line_offset;
1708 s->last_depth = depth;
1710 } else if (is_buffer_shared(s->ds->surface) &&
1711 (full_update || s->ds->surface->data != s->vram_ptr + (s->start_addr * 4))) {
1712 s->ds->surface->data = s->vram_ptr + (s->start_addr * 4);
1717 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1719 if (shift_control == 0) {
1720 full_update |= update_palette16(s);
1721 if (s->sr[0x01] & 8) {
1722 v = VGA_DRAW_LINE4D2;
1727 } else if (shift_control == 1) {
1728 full_update |= update_palette16(s);
1729 if (s->sr[0x01] & 8) {
1730 v = VGA_DRAW_LINE2D2;
1736 switch(s->get_bpp(s)) {
1739 full_update |= update_palette256(s);
1740 v = VGA_DRAW_LINE8D2;
1744 full_update |= update_palette256(s);
1749 v = VGA_DRAW_LINE15;
1753 v = VGA_DRAW_LINE16;
1757 v = VGA_DRAW_LINE24;
1761 v = VGA_DRAW_LINE32;
1766 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
1768 if (!is_buffer_shared(s->ds->surface) && s->cursor_invalidate)
1769 s->cursor_invalidate(s);
1771 line_offset = s->line_offset;
1773 printf("w=%d h=%d v=%d line_offset=%d cr[0x09]=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=0x%02x\n",
1774 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1776 addr1 = (s->start_addr * 4);
1777 bwidth = (width * bits + 7) / 8;
1781 d = ds_get_data(s->ds);
1782 linesize = ds_get_linesize(s->ds);
1784 for(y = 0; y < height; y++) {
1786 if (!(s->cr[0x17] & 1)) {
1788 /* CGA compatibility handling */
1789 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1790 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1792 if (!(s->cr[0x17] & 2)) {
1793 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1795 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1796 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1797 update = full_update |
1798 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1799 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
1800 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1801 /* if wide line, can use another page */
1802 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1805 /* explicit invalidation for the hardware cursor */
1806 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1810 if (page0 < page_min)
1812 if (page1 > page_max)
1814 if (!(is_buffer_shared(s->ds->surface))) {
1815 vga_draw_line(s, d, s->vram_ptr + addr, width);
1816 if (s->cursor_draw_line)
1817 s->cursor_draw_line(s, d, y);
1821 /* flush to display */
1822 dpy_update(s->ds, 0, y_start,
1823 disp_width, y - y_start);
1828 mask = (s->cr[0x17] & 3) ^ 3;
1829 if ((y1 & mask) == mask)
1830 addr1 += line_offset;
1832 multi_run = multi_scan;
1836 /* line compare acts on the displayed lines */
1837 if (y == s->line_compare)
1842 /* flush to display */
1843 dpy_update(s->ds, 0, y_start,
1844 disp_width, y - y_start);
1846 /* reset modified pages */
1847 if (page_max >= page_min) {
1848 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1851 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1854 static void vga_draw_blank(VGACommonState *s, int full_update)
1861 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1865 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1866 if (ds_get_bits_per_pixel(s->ds) == 8)
1867 val = s->rgb_to_pixel(0, 0, 0);
1870 w = s->last_scr_width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1871 d = ds_get_data(s->ds);
1872 for(i = 0; i < s->last_scr_height; i++) {
1874 d += ds_get_linesize(s->ds);
1876 dpy_update(s->ds, 0, 0,
1877 s->last_scr_width, s->last_scr_height);
1880 #define GMODE_TEXT 0
1881 #define GMODE_GRAPH 1
1882 #define GMODE_BLANK 2
1884 static void vga_update_display(void *opaque)
1886 VGACommonState *s = opaque;
1887 int full_update, graphic_mode;
1889 if (ds_get_bits_per_pixel(s->ds) == 0) {
1893 if (!(s->ar_index & 0x20)) {
1894 graphic_mode = GMODE_BLANK;
1896 graphic_mode = s->gr[6] & 1;
1898 if (graphic_mode != s->graphic_mode) {
1899 s->graphic_mode = graphic_mode;
1902 switch(graphic_mode) {
1904 vga_draw_text(s, full_update);
1907 vga_draw_graphic(s, full_update);
1911 vga_draw_blank(s, full_update);
1917 /* force a full display refresh */
1918 static void vga_invalidate_display(void *opaque)
1920 VGACommonState *s = opaque;
1923 s->last_height = -1;
1926 void vga_common_reset(VGACommonState *s)
1932 s->lfb_vram_mapped = 0;
1936 memset(s->sr, '\0', sizeof(s->sr));
1938 memset(s->gr, '\0', sizeof(s->gr));
1940 memset(s->ar, '\0', sizeof(s->ar));
1941 s->ar_flip_flop = 0;
1943 memset(s->cr, '\0', sizeof(s->cr));
1949 s->dac_sub_index = 0;
1950 s->dac_read_index = 0;
1951 s->dac_write_index = 0;
1952 memset(s->dac_cache, '\0', sizeof(s->dac_cache));
1954 memset(s->palette, '\0', sizeof(s->palette));
1956 #ifdef CONFIG_BOCHS_VBE
1958 memset(s->vbe_regs, '\0', sizeof(s->vbe_regs));
1959 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1960 s->vbe_start_addr = 0;
1961 s->vbe_line_offset = 0;
1962 s->vbe_bank_mask = (s->vram_size >> 16) - 1;
1964 memset(s->font_offsets, '\0', sizeof(s->font_offsets));
1965 s->graphic_mode = -1; /* force full update */
1966 s->shift_control = 0;
1969 s->line_compare = 0;
1971 s->plane_updated = 0;
1976 s->last_scr_width = 0;
1977 s->last_scr_height = 0;
1978 s->cursor_start = 0;
1980 s->cursor_offset = 0;
1981 memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table));
1982 memset(s->last_palette, '\0', sizeof(s->last_palette));
1983 memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr));
1984 switch (vga_retrace_method) {
1985 case VGA_RETRACE_DUMB:
1987 case VGA_RETRACE_PRECISE:
1988 memset(&s->retrace_info, 0, sizeof (s->retrace_info));
1993 static void vga_reset(void *opaque)
1995 VGACommonState *s = opaque;
1996 vga_common_reset(s);
1999 #define TEXTMODE_X(x) ((x) % width)
2000 #define TEXTMODE_Y(x) ((x) / width)
2001 #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \
2002 ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1))
2003 /* relay text rendering to the display driver
2004 * instead of doing a full vga_update_display() */
2005 static void vga_update_text(void *opaque, console_ch_t *chardata)
2007 VGACommonState *s = opaque;
2008 int graphic_mode, i, cursor_offset, cursor_visible;
2009 int cw, cheight, width, height, size, c_min, c_max;
2011 console_ch_t *dst, val;
2012 char msg_buffer[80];
2013 int full_update = 0;
2015 if (!(s->ar_index & 0x20)) {
2016 graphic_mode = GMODE_BLANK;
2018 graphic_mode = s->gr[6] & 1;
2020 if (graphic_mode != s->graphic_mode) {
2021 s->graphic_mode = graphic_mode;
2024 if (s->last_width == -1) {
2029 switch (graphic_mode) {
2031 /* TODO: update palette */
2032 full_update |= update_basic_params(s);
2034 /* total width & height */
2035 cheight = (s->cr[9] & 0x1f) + 1;
2037 if (!(s->sr[1] & 0x01))
2039 if (s->sr[1] & 0x08)
2040 cw = 16; /* NOTE: no 18 pixel wide */
2041 width = (s->cr[0x01] + 1);
2042 if (s->cr[0x06] == 100) {
2043 /* ugly hack for CGA 160x100x16 - explain me the logic */
2046 height = s->cr[0x12] |
2047 ((s->cr[0x07] & 0x02) << 7) |
2048 ((s->cr[0x07] & 0x40) << 3);
2049 height = (height + 1) / cheight;
2052 size = (height * width);
2053 if (size > CH_ATTR_SIZE) {
2057 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode",
2062 if (width != s->last_width || height != s->last_height ||
2063 cw != s->last_cw || cheight != s->last_ch) {
2064 s->last_scr_width = width * cw;
2065 s->last_scr_height = height * cheight;
2066 s->ds->surface->width = width;
2067 s->ds->surface->height = height;
2069 s->last_width = width;
2070 s->last_height = height;
2071 s->last_ch = cheight;
2076 /* Update "hardware" cursor */
2077 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
2078 if (cursor_offset != s->cursor_offset ||
2079 s->cr[0xa] != s->cursor_start ||
2080 s->cr[0xb] != s->cursor_end || full_update) {
2081 cursor_visible = !(s->cr[0xa] & 0x20);
2082 if (cursor_visible && cursor_offset < size && cursor_offset >= 0)
2084 TEXTMODE_X(cursor_offset),
2085 TEXTMODE_Y(cursor_offset));
2087 dpy_cursor(s->ds, -1, -1);
2088 s->cursor_offset = cursor_offset;
2089 s->cursor_start = s->cr[0xa];
2090 s->cursor_end = s->cr[0xb];
2093 src = (uint32_t *) s->vram_ptr + s->start_addr;
2097 for (i = 0; i < size; src ++, dst ++, i ++)
2098 console_write_ch(dst, VMEM2CHTYPE(*src));
2100 dpy_update(s->ds, 0, 0, width, height);
2104 for (i = 0; i < size; src ++, dst ++, i ++) {
2105 console_write_ch(&val, VMEM2CHTYPE(*src));
2113 for (; i < size; src ++, dst ++, i ++) {
2114 console_write_ch(&val, VMEM2CHTYPE(*src));
2121 if (c_min <= c_max) {
2122 i = TEXTMODE_Y(c_min);
2123 dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1);
2132 s->get_resolution(s, &width, &height);
2133 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode",
2141 snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode");
2145 /* Display a message */
2147 s->last_height = height = 3;
2148 dpy_cursor(s->ds, -1, -1);
2149 s->ds->surface->width = s->last_width;
2150 s->ds->surface->height = height;
2153 for (dst = chardata, i = 0; i < s->last_width * height; i ++)
2154 console_write_ch(dst ++, ' ');
2156 size = strlen(msg_buffer);
2157 width = (s->last_width - size) / 2;
2158 dst = chardata + s->last_width + width;
2159 for (i = 0; i < size; i ++)
2160 console_write_ch(dst ++, 0x00200100 | msg_buffer[i]);
2162 dpy_update(s->ds, 0, 0, s->last_width, height);
2165 CPUReadMemoryFunc * const vga_mem_read[3] = {
2171 CPUWriteMemoryFunc * const vga_mem_write[3] = {
2177 static int vga_common_post_load(void *opaque, int version_id)
2179 VGACommonState *s = opaque;
2182 s->graphic_mode = -1;
2186 const VMStateDescription vmstate_vga_common = {
2189 .minimum_version_id = 2,
2190 .minimum_version_id_old = 2,
2191 .post_load = vga_common_post_load,
2192 .fields = (VMStateField []) {
2193 VMSTATE_UINT32(latch, VGACommonState),
2194 VMSTATE_UINT8(sr_index, VGACommonState),
2195 VMSTATE_PARTIAL_BUFFER(sr, VGACommonState, 8),
2196 VMSTATE_UINT8(gr_index, VGACommonState),
2197 VMSTATE_PARTIAL_BUFFER(gr, VGACommonState, 16),
2198 VMSTATE_UINT8(ar_index, VGACommonState),
2199 VMSTATE_BUFFER(ar, VGACommonState),
2200 VMSTATE_INT32(ar_flip_flop, VGACommonState),
2201 VMSTATE_UINT8(cr_index, VGACommonState),
2202 VMSTATE_BUFFER(cr, VGACommonState),
2203 VMSTATE_UINT8(msr, VGACommonState),
2204 VMSTATE_UINT8(fcr, VGACommonState),
2205 VMSTATE_UINT8(st00, VGACommonState),
2206 VMSTATE_UINT8(st01, VGACommonState),
2208 VMSTATE_UINT8(dac_state, VGACommonState),
2209 VMSTATE_UINT8(dac_sub_index, VGACommonState),
2210 VMSTATE_UINT8(dac_read_index, VGACommonState),
2211 VMSTATE_UINT8(dac_write_index, VGACommonState),
2212 VMSTATE_BUFFER(dac_cache, VGACommonState),
2213 VMSTATE_BUFFER(palette, VGACommonState),
2215 VMSTATE_INT32(bank_offset, VGACommonState),
2216 VMSTATE_UINT8_EQUAL(is_vbe_vmstate, VGACommonState),
2217 #ifdef CONFIG_BOCHS_VBE
2218 VMSTATE_UINT16(vbe_index, VGACommonState),
2219 VMSTATE_UINT16_ARRAY(vbe_regs, VGACommonState, VBE_DISPI_INDEX_NB),
2220 VMSTATE_UINT32(vbe_start_addr, VGACommonState),
2221 VMSTATE_UINT32(vbe_line_offset, VGACommonState),
2222 VMSTATE_UINT32(vbe_bank_mask, VGACommonState),
2224 VMSTATE_END_OF_LIST()
2228 void vga_common_init(VGACommonState *s, int vga_ram_size)
2232 for(i = 0;i < 256; i++) {
2234 for(j = 0; j < 8; j++) {
2235 v |= ((i >> j) & 1) << (j * 4);
2240 for(j = 0; j < 4; j++) {
2241 v |= ((i >> (2 * j)) & 3) << (j * 4);
2245 for(i = 0; i < 16; i++) {
2247 for(j = 0; j < 4; j++) {
2250 v |= b << (2 * j + 1);
2255 #ifdef CONFIG_BOCHS_VBE
2256 s->is_vbe_vmstate = 1;
2258 s->is_vbe_vmstate = 0;
2260 s->vram_offset = qemu_ram_alloc(vga_ram_size);
2261 s->vram_ptr = qemu_get_ram_ptr(s->vram_offset);
2262 s->vram_size = vga_ram_size;
2263 s->get_bpp = vga_get_bpp;
2264 s->get_offsets = vga_get_offsets;
2265 s->get_resolution = vga_get_resolution;
2266 s->update = vga_update_display;
2267 s->invalidate = vga_invalidate_display;
2268 s->screen_dump = vga_screen_dump;
2269 s->text_update = vga_update_text;
2270 switch (vga_retrace_method) {
2271 case VGA_RETRACE_DUMB:
2272 s->retrace = vga_dumb_retrace;
2273 s->update_retrace_info = vga_dumb_update_retrace_info;
2276 case VGA_RETRACE_PRECISE:
2277 s->retrace = vga_precise_retrace;
2278 s->update_retrace_info = vga_precise_update_retrace_info;
2283 /* used by both ISA and PCI */
2284 void vga_init(VGACommonState *s)
2288 qemu_register_reset(vga_reset, s);
2290 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
2292 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
2293 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
2294 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
2295 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
2297 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
2299 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
2300 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
2301 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
2302 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
2305 #ifdef CONFIG_BOCHS_VBE
2306 #if defined (TARGET_I386)
2307 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2308 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
2310 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2311 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
2313 /* old Bochs IO ports */
2314 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
2315 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
2317 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
2318 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
2320 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2321 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
2323 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2324 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
2326 #endif /* CONFIG_BOCHS_VBE */
2328 vga_io_memory = cpu_register_io_memory(vga_mem_read, vga_mem_write, s);
2329 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
2331 qemu_register_coalesced_mmio(isa_mem_base + 0x000a0000, 0x20000);
2334 void vga_init_vbe(VGACommonState *s)
2336 #ifdef CONFIG_BOCHS_VBE
2337 /* XXX: use optimized standard vga accesses */
2338 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2339 VGA_RAM_SIZE, s->vram_offset);
2343 /********************************************************/
2344 /* vga screen dump */
2346 static void vga_save_dpy_update(DisplayState *ds,
2347 int x, int y, int w, int h)
2349 if (screen_dump_filename) {
2350 ppm_save(screen_dump_filename, ds->surface);
2351 screen_dump_filename = NULL;
2355 static void vga_save_dpy_resize(DisplayState *s)
2359 static void vga_save_dpy_refresh(DisplayState *s)
2363 int ppm_save(const char *filename, struct DisplaySurface *ds)
2371 f = fopen(filename, "wb");
2374 fprintf(f, "P6\n%d %d\n%d\n",
2375 ds->width, ds->height, 255);
2377 for(y = 0; y < ds->height; y++) {
2379 for(x = 0; x < ds->width; x++) {
2380 if (ds->pf.bits_per_pixel == 32)
2383 v = (uint32_t) (*(uint16_t *)d);
2384 r = ((v >> ds->pf.rshift) & ds->pf.rmax) * 256 /
2386 g = ((v >> ds->pf.gshift) & ds->pf.gmax) * 256 /
2388 b = ((v >> ds->pf.bshift) & ds->pf.bmax) * 256 /
2393 d += ds->pf.bytes_per_pixel;
2401 static DisplayChangeListener* vga_screen_dump_init(DisplayState *ds)
2403 DisplayChangeListener *dcl;
2405 dcl = qemu_mallocz(sizeof(DisplayChangeListener));
2406 dcl->dpy_update = vga_save_dpy_update;
2407 dcl->dpy_resize = vga_save_dpy_resize;
2408 dcl->dpy_refresh = vga_save_dpy_refresh;
2409 register_displaychangelistener(ds, dcl);
2413 /* save the vga display in a PPM image even if no display is
2415 static void vga_screen_dump(void *opaque, const char *filename)
2417 VGACommonState *s = opaque;
2419 if (!screen_dump_dcl)
2420 screen_dump_dcl = vga_screen_dump_init(s->ds);
2422 screen_dump_filename = (char *)filename;
2423 vga_invalidate_display(s);